Non-dynamic origin of the acoustic attenuation at high frequency in glasses

Details Non-dynamic origin of the acoustic attenuation at high frequency in glasses Non-dynamic origin of the acoustic attenuation at high frequency in glasses

1999-11-02

arxiv.org/abs/cond-mat/9911012v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

3 pages, 5 Figures, To be published in PRL

Scientific paper

The sound attenuation in the THz region is studied down to T=16 K in glassy glycerol by inelastic x-ray scattering. At striking variance with the decrease found below 100 K in the GHz data, the attenuation in the THz range does not show any T dependence. This result i) indicates the presence of two different attenuation mechanisms, active respectively in the high and low frequency limits; ii) demonstrates the non-dynamic origin of the attenuation of THz sound waves, and confirms a similar conclusion obtained in SiO2 glass by molecular dynamics; and iii) supports the low frequency attenuation mechanism proposed by Fabian and Allen (Phys.Rev.Lett. 82, 1478 (1999)).

Affiliated with

Also associated with

No associations

Rating

Non-dynamic origin of the acoustic attenuation at high frequency in glasses does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Non-dynamic origin of the acoustic attenuation at high frequency in glasses, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-dynamic origin of the acoustic attenuation at high frequency in glasses will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-714843